Methane leaks during production may offset climate benefits of natural gas.

A new strategy for addressing climate change takes a realistic approach to the challenge of making science useful, says Ryan Meyer.

Natural-gas operations could leak enough methane to tarnish their clean image. (Editorial)

There's a solution to the continent's rampant fires and feral animals, says David Bowman — introduce large mammals and increase hunting pressure.

Added sweeteners pose dangers to health that justify controlling them like alcohol, argue Robert H. Lustig, Laura A. Schmidt and Claire D. Brindis.

Conservationists fear spills in icy waters as Norway awards oil-production licences.

The Global Fund’s drive to ensure sustainability and efficiency means that it may not be able to meet its commitments to combat disease, says Laurie Garrett.

Europe is making a good start on learning about the health risks of low-dose radiation with a programme to share cold-war data and set research priorities. But the effort needs to be global. (Editorial)

The economic pain of a flattening supply will trump the environment as a reason to curb the use of fossil fuels, say James Murray and David King.

US indicators reveal challenges and opportunities as science momentum shifts to China.